The Wooded Hill, Horse Heaven, El Prado, Yerba Santa, Laguna and Burnt Rancheria campgrounds were also included in the order.

The presence of E. Coli indicates contamination by human or animal waste. Total coliform bacteria comes from the soil or other environmental sources, which means there could be a break in the pipes, the DEH said.

The agency said the federal water distribution system was disinfected and follow-up samples confirmed the water was clean.

The other two water systems on Mount Laguna — which serve homes, private cabins, shops and restaurants — were not included in the order.